How to make the Grid floor Axes (X and Y) visible with plane on Z height 0?
So if you want to work with even numbers and later transfer that to more complex scenes that are supposed to lie on a plane, I don't find that a very elegant solution. My main concern is that these colored axes (X and Y) should always be visible when several objects in a scene lie on a plane, which is simply more helpful for orientation and faster when working in three-dimensional space.
I remember when I first started this tutorial series a few months ago (the 2.8 version at the time), I didn't have this problem, I found it clear when I was in the viewport and could see very quickly in the camera view exactly where I was in space (solid mode). Maybe this has been changed in the latest version (probably for UI reasons).